Issue #20305 has been updated by nagachika (Tomoyuki Chikanaga). Backport changed from 3.0: DONTNEED, 3.1: DONTNEED, 3.2: REQUIRED, 3.3: DONE to 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONE, 3.3: DONE ruby_3_2 commit:a67b43d99e24dc7c2a9e134a65f28f968fe124c1 merged revision(s) commit:3a04ea2d0379dd8c6623c2d5563e6b4e23986fae. ---------------------------------------- Bug #20305: commit 1d2d25dcadda0764f303183ac091d0c87b432566 breaks grapheme_clusters https://bugs.ruby-lang.org/issues/20305#change-108979 * Author: fablestales (Fable Tales) * Status: Closed * Backport: 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONE, 3.3: DONE ---------------------------------------- given a script: ``` #script.rb p "안녕".byteslice(0, 4).grapheme_clusters ``` The commit 1d2d25dcadda0764f303183ac091d0c87b432566 (https://github.com/ruby/ruby/commit/1d2d25dcadda0764f303183ac091d0c87b432566) breaks the grapheme_clusters method on a byte slice ``` (commit 1d2d25dcadda0764f303183ac091d0c87b432566) ((HEAD detached at 1d2d25dcad)) $ ./ruby --disable=gems script.rb ["안", "\xEB"] ((HEAD detached at 1d2d25dcad)) $ git checkout HEAD^ (114e71d06280f9c57b9859ee4405ae89a989ddb6) ((HEAD detached at 114e71d062)) $ make -j ... ((HEAD detached at 114e71d062)) $ ./ruby --disable=gems script.rb ["안"] ((HEAD detached at 114e71d062)) $ cat script.rb p "안녕".byteslice(0, 4).grapheme_clusters ``` the expected result here is almost certainly the latter output, and not the former. -- https://bugs.ruby-lang.org/